Card or paper stock for use in duplicating processes



Patented Nov. 26, 1935 I I D 2,021,938

I UNITED/STATES PATENT, OFFICE aozisss can on runs s'rocx roa use mnurucamo raocnssas I Raymond B. Jones, Wynnewood, Pa.

No Drawing. Application September 16, 1933,

SerlalNo. 689,791

v 1 (01. 41-313) I The principal object or the present invention isExample No. a

to provide brighter, cleaner and clearer out .6 9 3 oz of glue andto-reduce fading to a minimum while cb- 15 ofhmarbonate of sodiumtaining an increased number of copies from any 1 mum of silicate of mmwed disc 5 I o gelatin roll, hectograph ink or like duplicating m 14mums of water mgj and 6th ends hereafter set forth or 10 oz. of alumsolution consisting of 6 oz. of

' alum dissolved in 2 pounds of water; and

appearing, the invention, generally stated, com- 7 prises card or paperstock for the purpose set forth g gzkg im i ffg' not amt o surfacerendered and are subject to change, and the admixtures hygroscopic incharacter for example, by the ap-- v v a maybe prepared cold, and theinvention is not plication of an admixture of glycerine withccm um; nothe of the 8 m0 1 H ts mew patible saline and other ingredients.

a tioned, the object being to impart to paper or I The invention alsocomprises the improvements cardstock a hygroscopic surface the 15 to bepresently described and finally claimed. i5

There is applied to the portion of the card or g zfigg i gi g g g b gpaper stock which is to receive hectograph or dared-mm 1c 5:; :31 is another ink from av gelatin roll or other like duplim use g :2 my eatingdevice, a substance or material adapted to n g: gen mm provide ahygroscopic surface. This substance same mas e evicemcmbem 1 or materialis applied to the paper or card stock, stock and are brighter forexample, by means '01 a press to the platen ggg g g gz Ming th ci whichit is applied and then transferred from an i if g g i the platen bypressure to the face of the stock, in 7 em W hy roscopicfor the purposeset forth, rather than 2 or a roller may be used, or the material may beto the formula. or that! I More cardstcck.

otherwise lied.

a substance or material adapted the invention comprises placing asuitable procto provide a hygroscopic surface when so applied quid any Mof the Mk; which to the stock are as follows: v i um W W qualitiesofthewritingsurfacefortheuseofpn.pencil I 9- 1 or ink, and will imparthygroscopicity for the; 2 te'aspoonfuls of glycerine, purpose set forth.lfidropsofcrudeoil, v Iclaim: i,

dropsof sodium silicate, The process whioh'co its in facially impreg- 2%teaspoonfulsofbicarbona'te ofsodium, 1 8 B 1 W which 18 other!!! with$35 1 2 teaspooniuls of alum, and I a composition adapted to impartlrvgrosoopicity to Water. in sufiicient quantity to provide for apfaccsonly'and transferring copy from aduplipllcationoftheadmixturetotheplatenofthe catingmediumilponliwh-mpressbywhichitisappliedtothepaperor RAYMOND8.1101138.

